{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA1125-6EF32-0HC0","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA1125-6EF32-0HC0","canonicalUrl":"https://aoctrl.com/siemens/3VA1125-6EF32-0HC0","factsUrl":"https://aoctrl.com/api/mcp/products/3VA1125-6EF32-0HC0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 3VA1125-6EF32-0HC0, molded case circuit breaker, line protection, 3-pole, 25 A rated continuous current Iu, TM240 overcurrent release, breaking capacity 220 kA at 240 V, 70 mm depth.","salesMarkdown":"It's built for line protection — meaning it guards the feeder or downstream distribution, not a motor or a branch with special coordination needs. The breaking capacity is what sets this part apart: 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and still 17 kA at 690 V. If your BOM calls for undervoltage protection or ground-fault sensing, this isn't the variant. ## Thermal derating — where the 25 A holds and where it doesn't At 55 °C it derates to 24 A, at 60 °C to 23.5 A, at 65 °C to 23 A, and at 70 °C to 22.5 A. If your panel sits in a hot enclosure — say a non-ventilated steel box in a mill or a sunny outdoor cabinet — that derating curve is the one that governs the actual load you can hang on this breaker. The TM240 release is factory-set; no field adjustment of the thermal element. The 3VA1125-6EF32-0HC0 measures 70 mm deep, 76.2 mm wide, and 130 mm tall. No trip indicator on the front face; you'll know it's tripped by the handle position or the auxiliary switch feedback.","metaTitle":"Siemens 3VA1125-6EF32-0HC0 SENTRON MCCB, 25 A, 3-Pole, 220 k","metaDescription":"Siemens 3VA1125-6EF32-0HC0 SENTRON molded case circuit breaker, 25 A rated continuous current, 3-pole, breaking capacity 220 kA at 240 V. TM240 release, shunt trip. Quoted to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Molded Case Circuit Breakers (MCCB)"],"specifications":{"Depth":"70 mm","Width":"76.2 mm","Height":"130 mm","at 240 V":"220 kA","at 415 V":"154 kA","at 440 V":"121 kA","at 690 V":"17 kA","at 40 °C":"25 A","at 45 °C":"25 A","at 50 °C":"25 A","at 55 °C":"24 A","at 60 °C":"23.5 A","at 65 °C":"23 A","at 70 °C":"22.5 A","Trip indicator":"No","Number of poles":"3","Product version":"Line protection","Voltage trigger":"Yes","lifecycle_stage":"current","Product brand name":"SENTRON","Product designation":"Molded case circuit breaker","Latching - endurance":"15 000","Undervoltage Release":"No","Communication Function":"No","Phase failure detection":"No","During Storage / Maximum":"80 °C","During Storage / Minimum":"-40 °C","Auxiliary contact version":"2 auxiliary switches HQ","During Operation / Maximum":"70 °C","During Operation / Minimum":"-25 °C","Other Measurement Function":"No","Rated continuous current Iu":"25 A","Rated insulation voltage Ui":"800 V","Design of the auxiliary release":"Shunt trip (STL)","Ground fault monitoring version":"Without","Of The Integrated Auxiliary Trip":"3VA9688-0BL30","Design of the overcurrent release":"TM240","Design of short-circuit protection":"For switching power values in DC networks, see the 3VA molded case circuit breaker device manual; link to be found under Service & Support in the last chapter","Protection class IP / on the front":"IP40","Reference code / acc. to DIN EN 81346-2":"Q","Adjustable response value time / tr max.":"1","Adjustable response value time / tr min.":"1","Max. rated operational voltage Ue with DC":"500 V","Undervoltage Release With Leading Contact":"No","Product extension / optional / motor drive":"Yes","Adjustable response value current / Ir max.":"25 A","Adjustable response value current / li max.":"320 A","Adjustable response value current / li min.":"160 A","Adjustable response value current / lr min.":"18 A","Neutral conductors / upgradeable/retrofittable":"No","Number of CO contacts / for auxiliary contacts":"2","Protective function of the overcurrent release":"LI","Of The Integrated Auxiliary Switch/Alarm Switch":"3VA9988-0AA12","Switching capacity class of the circuit breaker":"H","Max. rated operational current of the frame size":"160 A","Max. rated operational voltage Ue with AC 50/60Hz":"690 V","Type of electrical connection / for main current circuit":"lug terminal","Arrangement of electrical connectors / for main current circuit":"Front terminal","Type of connectable conductor cross-section, connection screw, width x thickness , max.":"17 x 6.5","Type of connectable conductor cross-section, connection screw, width x thickness , min.":"12 x 0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=21780&mlfb=3VA1125-6EF32-0HC0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA1125-6EF32-0HC0/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3VA1125-6EF32-0HC0 at different voltages?","answer":"Breaking capacity is 220 kA at 240 V, 154 kA at 415 V, 121 kA at 440 V, and 17 kA at 690 V."},{"question":"Does the 3VA1125-6EF32-0HC0 include a shunt trip or undervoltage release?","answer":"It includes a shunt trip (STL) auxiliary release, but no undervoltage release."},{"question":"What is the thermal derating for this MCCB above 50 °C?","answer":"The 25 A rating holds from 40 °C to 50 °C. At 55 °C it derates to 24 A, at 60 °C to 23.5 A, at 65 °C to 23 A, and at 70 °C to 22.5 A."},{"question":"Where can I buy 3VA1125-6EF32-0HC0 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA1125-6EF32-0HC0","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3VA1125-6EF32-0HC0 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}